我的输入，如果不起作用，该如何解决我的代码？ Python 2.7.16

Question

我的if语句不起作用：

choice = float(input("Enter 1 to enter sec. Enter 2 to enter mins")):
#My problem:
if 'choice' == 1
    a = float(input("Enter secs"))

等...

顺便说一句，我正在做一个计时器，但我需要知道...它告诉我语法无效...

Answer 1

固定代码（带有我的评论）：

choice = int(raw_input("Enter 1 to enter sec. Enter 2 to enter mins")) # no need to use float here, also in python2 please use raw_input
if choice == 1:  # you tried to compare `choice` string with 1 (always False), compare choice variable value with 1 instead. Also note, that you missed : after if
    a = float(input("Enter secs"))

Answer 2

我知道了！

choice + int(input("Bla bla bla")):

我忘记了'：'